Those years, learn together Java 8-4

Import java.awt.borderlayout;import java.awt.checkbox;import java.awt.checkboxgroup;import  java.awt.Container;import java.awt.Font;import java.awt.event.ActionEvent;import  java.awt.event.actionlistener;import java.awt.event.itemevent;import java.awt.event.itemlistener; import javax.swing.jbutton;import javax.swing.jframe;import javax.swing.jlabel;import  Javax.swing.jpanel;import javax.swing.jtextfield;public class ttl extends jframe  implements actionlistener{public ttl () {//Construction method   //Interface Display problem setsize (320, 300); SetVisible (TRUE); Container content = getcontentpane (); Jpanel jp1 = new jpanel ();  //Create a panel Jlabel label = new jlabel (" Welcome to the Student Information Management System ");       //Welcome Statement Jp1.add (label);             //add a label to the panel JP1 jpanel jp2 = new&nbsp JPanel ();          //Create a panel to display labels that prompt for various functions jlabel label1 =  new jlabel ("Please enter the student's details:");    //enter the language of the prompt input:jlabel label2 = new  JLabel ("Learning   students   studies   Number:");      //prompts for labels for various input contents jtextfield field1=new  JTextField (ten);        //10 for the length of the study, you can set your own jlabel label3 = new  jlabel ("Learning   Health   surname   Name:")      //prompt to enter a label for the student's name Jtextfield field2=new  jtextfield (ten);        //10 is the name length and can be set by itself jlabel label4 =  New jlabel ("Learning   health   sex  : ")      //prompt to enter the label of the student's gender checkboxgroup  group1 = new checkboxgroup ();      //Create a check box to select a feature checkbox  check11 = new checkbox ("Male", true,group1);     // Add an option to the check box in Check11.additemlistener (New checkhAndler (1));     //Add Event Listener Checkbox check12 = new checkbox ("female") to the corresponding check box, FALSE,GROUP1)   //Add the option to the check box Check12.additemlistener (New checkhandler (2));    // Add an event listener to the appropriate checkbox Jlabel label5 = new jlabel ("    day   period:");      //prompt to enter the date of birth label Jtextfield field3=new jtextfield ("1994", 3);       //3 is the name length, can be set Jlabel label51 = new jlabel ("year"); Jtextfield field4=new jtextfield ("", 2);       //2 is the name length and can be set by itself JLabel  label52 = new jlabel ("month"); Jtextfield field5=new jtextfield ("Ten", 2);       //2 is the name length and can be set by itself JLabel  label53 = new jlabel ("Day"); Jlabel label6 = new jlabel ("Joint Culture:");        // Tips for selecting a joint culture or not label Checkboxgroup group2 = new checkboxgroup ();       //Create a check box to select a feature Checkbox check21 = new checkbox ("Yes", true,group2);     //Add an option to the check box Check21.additemlistener (New checkhandler (1));     // Add Event Listener Checkbox check22 = new checkbox ("No", false,group2) to the corresponding check box;   // Add an option to the check box Check22.additemlistener (New checkhandler (2));    //add an event listener to the corresponding check box   // Add components to the Panel container Jp2.add (Label1); Jp2.add (Label2); Jp2.add (field1); Jp2.add (LABEL3); Jp2.add (field2); Jp2.add (LABEL4); Jp2.add (CHECK11); Jp2.add (check12); Jp2.add (Label5); Jp2.add (field3); Jp2.add (label51); Jp2.add (FIELD4); Jp2.add ( LABEL52); Jp2.add (FIELD5); Jp2.add (label53); Jp2.add (LABEL6); Jp2.add (check21); Jp2.add (check22); Content.add (JP1,  borderlayout.north);  //add panels to the container Content.add (jp2, borderlayout.center),  //add panels to the container respectively} class checkhandler implements itemlistener     //Event Response class for check box key {private  int sel; Checkhandler (int select) {sel&Nbsp;= select;} Public void itemstatechanged (itemevent e) {switch (SEL) {case 1:method1 ();break;      //invokes the method of choosing the corresponding function case 2:method2 (); break;   //invokes the method of the selected function}}private  VOID METHOD1 ()            //Event Response Method {}private  VOID METHOD2 ()        //     Incident Response Method {}}public  Static void main (String[] args) {Ttl ui = new ttl (); ui.setVisible (true);} @Overridepublic  void actionperformed (actionevent e) {// todo auto-generated  Method stub}}

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Those years, learn together Java 8-4